100212220022221 has 2 divisors, whose sum is σ = 100212220022222. Its totient is φ = 100212220022220.

The previous prime is 100212220022207. The next prime is 100212220022231. The reversal of 100212220022221 is 122220022212001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53325483904900 + 46886736117321 = 7302430^2 + 6847389^2 .

It is a cyclic number.

It is not a de Polignac number, because 100212220022221 - 2⁷ = 100212220022093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100212220022231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50106110011110 + 50106110011111.

It is an arithmetic number, because the mean of its divisors is an integer number (50106110011111).

Almost surely, 2^{100212220022221} is an apocalyptic number.

It is an amenable number.

100212220022221 is a deficient number, since it is larger than the sum of its proper divisors (1).

100212220022221 is an equidigital number, since it uses as much as digits as its factorization.

100212220022221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 100212220022221 its reverse (122220022212001), we get a palindrome (222432242234222).

The spelling of 100212220022221 in words is "one hundred trillion, two hundred twelve billion, two hundred twenty million, twenty-two thousand, two hundred twenty-one".